on a piece of paper graph f(x) = 20*0.6^X.Then determine which answer choice matches the graph you drew.
1 answer:
Answer:
A
Step-by-step explanation:
1. For each a>0, thus
and
Hence, the graph of the function passes through the point (0,20). This gives us that option B and C are extra.
2. At x=1
The graph of the function passes through the point (1,12).
3. We have to choose option A or option D. In option D graph of the function passes through the point (1,16), in option A graph passes through the point (1,12), so option A is correct.
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<u>Answer: </u>
Expression x + 2my + z represents cost of order where x, y, z are cost of small , medium and large drinks (in dollars) respectively.
<u>Solution: </u>
Given that
Juan’s family ordered a small drink and m medium drinks.
Alex family ordered m medium drinks and a large drink.
Need to write an algebraic expression which shows total cost of both order in dollars.
Let’s assume cost of one small drink = x
And assume cost of one medium drink = y
And assume cost of one large drink = z
So now cost of order of Juan’s family is equal to cost of 1 small drink + cost of m medium drinks = 1 x + m
y
= x + my
And cost of order of Alex family is equal to cost of m medium drinks + cost of one large drink
= m x y + 1 x z
=my + z
So total cost of both order in dollars = x + my + my + z = x + 2my + z
Hence expression x + 2my + z represents cost of order where x , y , z are cost of small , medium and large drinks (in dollars) respectively.